Title:
Telephone system using magnetic recorder
Document Type and Number:
United States Patent 2680155


Inventors:
Imre, Molnar
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Sponsored by:
Flash of Genius
Publication Date:
06/01/1954
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Assignee:
Automatic, Elect Lab
Primary Class:
379/115.010
Other Classes:
379/119, 379/280, 379/289, 379/279
International Classes:
H04Q3/00
US Patent References:
1277440
2112951Telephone system
2254933Record controlled machine
2298519Telephone system
2359617Magnetic recording apparatus
2394990Recording system in seismic surveying
2416445Automatic phonograph
2431646Selector for automatic phonographs
2437118Automatic telephone system having rating independent of routing
2514578Sound recording and reproduction system
2549071Space reservation system
2564403Electrical and cyclical data posting system
2567812Code transmitter
2597866Data conversion system